From 03144b5869d2921dafbea477246aeb5d4eb5fc38 Mon Sep 17 00:00:00 2001
From: Michael Dalton <mwdalton@google.com>
Date: Thu, 16 Jan 2014 22:23:29 -0800
Subject: [PATCH] lib: Ensure EWMA does not store wrong intermediate values

To ensure ewma_read() without a lock returns a valid but possibly
out of date average, modify ewma_add() by using ACCESS_ONCE to prevent
intermediate wrong values from being written to avg->internal.

Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Michael Dalton <mwdalton@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
Reading git-format-patch failed